class ReeMapper::DateTime

def cast(value, role: nil)
  if value.class == DateTime
    value
  elsif value.class == Time
    ReeDatetime::InDefaultTimeZone.new.call(value.to_datetime)
  elsif value.is_a?(String)
    begin
      ReeDatetime::InDefaultTimeZone.new.call(DateTime.parse(value))
    rescue ArgumentError
      raise ReeMapper::CoercionError, "is invalid datetime"
    end
  else
    raise ReeMapper::TypeError, "should be a datetime"
  end
end

def db_dump(value, role: nil)
  serialize(value, role: role)
end

def db_load(value, role: nil)
  cast(value, role: role)
end

def serialize(value, role: nil)
  if value.class == DateTime
    value
  else
    raise ReeMapper::TypeError, "should be a datetime"
  end
end